SPRING ANALOG MODEL FOR FLEXIBLE CULVERT BEHAVIOR

AN ANALOG MODEL CONSISTING OF PIN-JOINTED RIGID SEGMENTS IS USED TO SIMULATE THE SOIL-CULVERT INTERACTION OF A FLEXIBLE CIRCULAR CULVERT SUBJECTED TO EARTH LOADING. THE SOIL BEHAVIOR IS EXPRESSED IN TERMS OF THE CONSTRAINED MODULUS, WHICH SOME INVESTIGATORS HAVE INDICATED CAN BE DETERMINED FROM THE DRY DENSITY. THE FORCES DUE TO THE SOIL WEIGHT ARE APPLIED AT THE JOINTS BY MEANS OF CALIBRATED SPRINGS, WHERE THE STIFFNESSES OF THE SPRINGS ARE SET TO CORRESPOND WITH THE STRESS-STRAIN CHARACTERISTICS OF THE SURRONDING SOIL, AND THE EFFECT OF SETTLEMENT OF THE ADJACENT EMBANKMENT IS HANDLED BY MOVING THE SPRING SUPPORTS THROUGH CALCULATED DISTANCES. THE RESULTING RESPONSE OF THE MODEL IS MEASURED, AND THESE DATA, TOGETHER WITH A MODIFICATION FACTOR TO ACCOUNT FOR RING STIFFNESS, ARE SUGGESTED FOR POSSIBLE USE IN DETERMINING DIRECTLY THE RING FORCES AND DEFORMATIONS OF THE CULVERT FOR A WIDE RANGE OF FIELD CONDITIONS. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Appendices; Figures; References;
  • Pagination: pp 29-39
  • Monograph Title: Soil roadway response: underdrains and classification
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00235798
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Oct 13 1970 12:00AM